Homocrinus-Asaphocrinus Assoc., Rochester Shale, Lockport: Wenlock, New York

List of taxa
Where & when
Geology
Taphonomy & methods
Metadata & references
Taxonomic list
unclassified
Saccocrinus sp.
Trilobita
Trilobita indet. Walch 1771
Trilobita - Phacopida - Dalmanitidae
Dalmanites limulurus
Trilobita - Phacopida - Homalonotidae
Trimerus delphinocephalus
Trilobita - Phacopida - Calymenidae
Calymene niagarensis Hall 1843
Trilobita - Proetida - Proetidae
Proetus ? stokesi (Murchison 1839)
recombined as Warburgella stokesii
Trilobita - Lichida - Lichidae
Arctinurus boltoni (Bigsby 1825)
Trilobita - Corynexochida - Illaenidae
Bumastus ioxus (Hall 1868)
Tentaculita - Cornulitida - Cornulitidae
Cornulites sp. Schlotheim 1820
Gastropoda - Euomphalina - Platyceratidae
Naticonema niagarensis (Hall 1852)
original and current combination Platyostoma niagarensis
Bivalvia - Ostreida - Pterineidae
Cornellites emaceratus
Rhynchonellata - Athyridida - Rhynchospirinidae
Trematospira camura
Homoeospira apriniformis
Rhynchonellata - Athyridida - Meristellidae
Whitfieldella nitida (Hall 1843)
Rhynchonellata - Spiriferida - Cyrtiidae
Striispirifer niagarensis (Conrad 1842)
Rhynchonellata - Orthida - Rhipidomellidae
Dalejina "hybrida" (Sowerby 1839)
Rhynchonellata - Orthida - Dalmanellidae
Resserella sp. Bancroft 1928
Rhynchonellata - Atrypida - Atrypidae
Atrypa "reticularis" (Linnaeus 1758)
original and current combination Anomia reticularis
Rhynchonellata - Atrypida - Atrypinidae
Atrypina rugosa
Rhynchonellata - Rhynchonellida - Rhynchotrematidae
Stegerhynchus neglectum
original and current combination Rhynchonella (Stegerhynchus)
? Stegerhynchus sp. (Foerste 1909)
original and current combination Rhynchonella (Stegerhynchus)
Strophomenata - Orthotetida - Chilidiopsidae
Coolinia subplana
spelled with current rank as Fardenia (Coolinia)
Strophomenata - Strophomenida - Amphistrophiidae
Amphistrophia striata (Hall 1843)
Strophomenata - Strophomenida - Rafinesquinidae
Leptaena "rhomboidalis" (Wahlenberg 1818)
recombined as Leptaena (Leptaena) rhomboidalis
Strophomenata - Strophomenida - Sowerbyellidae
Eoplectodonta transversalis (Wahlenberg 1818)
recombined as Eoplectodonta (Eoplectodonta) transversalis
Craniata - Craniopsida - Craniopsidae
Pholidops squamiformis
synonym of Craniops
Stenolaemata - Cryptostomata - Rhinoporidae
Lichenalia concentrica Hall 1852
Stenolaemata - Cryptostomata - Fenestellidae
Fenestella sp. Lonsdale 1839
Stenolaemata - Cystoporata - Fistuliporidae
Chilotrypa ostiolata
original and current combination Cheilotrypa
Stenolaemata - Trepostomata - Trematoporidae
Trematopora tuberculata
Stenolaemata - Phylloporinidae
Phylloporina asperatostriata
asperato-striata
Pterobranchia - Dendroidea - Acanthograptidae
Dictyonema retiforme
Asteroidea - Hadrosida - Palaeasteridae
Palaeaster niagarensis Hall 1852
Ophiuroidea - Oegophiurida - Protasteridae
Protaster stellifer Ringueberg 1886
Edrioasteroidea - Hemicystitidae
Hemicystites parasiticus
Hemicystites sp. Hall 1852
Crinoidea
Icthyocrinus laevis
Crinoidea - Sagenocrinida - Homalocrinidae
Asaphocrinus ornatus
Crinoidea - Dendrocrinida - Dendrocrinidae
Dendrocrinus sp. Hall 1852
Crinoidea - Homocrinida - Homocrinidae
Homocrinus parvus Hall 1852
Crinoidea - Myelodactylida - Myelodactylidae
Crinobrachiatus sp. Moore 1962
Crinoidea - Diplobathrida - Rhodocrinitidae
Lyriocrinus dactylus
Crinoidea - Diplobathrida - Dimerocrinitidae
Dimerocrinites sp. Phillips 1839
Crinoidea - Monobathrida - Eucalyptocrinitidae
Eucalyptocrinites sp. Goldfuss 1831
Crinoidea - Monobathrida - Patelliocrinidae
Macrostylocrinus ornatus
Rhombifera - Caryocrinitidae
Caryocrinites ornatus Say 1825
unclassified
Metazoa indet. Haeckel 1874
synonym of Animalia
trace fossils (feeding burrow)
? Metazoa indet. Haeckel 1874
synonym of Animalia
undetermined encruster
Anthozoa - Favositida - Favositidae
Favosites parasiticus
unclassified
Porifera indet. Grant 1836
Paraechmina spinosa (Hall 1852)
original and current combination Cytherina spinosa
see common names

Geography
Country:United States State/province:New York
Coordinates: 43.2° North, 78.7° West (view map)
Paleocoordinates:27.1° South, 44.5° West
Basis of coordinate:based on political unit
Geographic resolution:local area
Time
Period:Silurian Epoch:Wenlock
10 m.y. bin:Silurian 2
Key time interval:Wenlock
Age range of interval:433.40000 - 427.40000 m.y. ago
Stratigraphy
Formation:Rochester Shale
Stratigraphic resolution:formation
Lithology and environment
Primary lithology:gray calcareous mudstone
Secondary lithology:gray calcareous "shale"
Includes fossils?Y
Includes fossils?Y
Lithology description: "dark gray, calcareous mudstones and shales"
Environment:offshore Tectonic setting:foreland basin
Glacial or sequence phase:highstand systems tract
Geology comments: Echinoderms well preserved, in thin layers, articulated, suggesting frequent burial by mud layers with little disturbance; shallow (storm effects) but below zone of direct storm impingement. BA 4-5.
2003:04:06 SEP environmental/tectonic/sequence calls based on field knowledge familiarity with stratigraphic context.
Taphonomy
Collection methods and comments
Reason for describing collection:paleoecologic analysis
Collection method comments: Much overlap with collection 12936, but not strictly speaking a subset (for example, trilobites are listed here but not in that collection). Authors say this community is a subset of the Striispirifer-Amphistrophia Community, which is represented by collection 12936. I have included taxa from table 45.50 (listed there with abundances) as well as a few other taxa mentioned in text but not listed for the one locality in table.
Metadata
Also known as:Striispirifer-Amphistrophia Community
Database number:26854
Authorizer:M. Foote Enterer:M. Foote
Modifier:S. Peters Research group:marine invertebrate
Created:2002-11-05 14:38:47 Last modified:2003-04-06 17:12:29
Access level:the public Released:2002-11-05 14:38:47
Creative Commons license:CC BY
Reference information

Primary reference:
4379. T. J. Frest, C. E. Brett, and B. J. Witzke. 1999. Caradocian-Gedinnian echinoderm associations of Central and Eastern North America. Paleocommunities--a case study from the Silurian and Lower Devonian 638-783 [M. Foote/K. Koverman/P. Wagner]